The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2010
Filed:
Mar. 14, 2006
Sumitaka Goto, Chiba, JP;
Sumitaka Goto, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
An image sensor has a semiconductor substrate of a first conductivity type having a photo-detecting surface and a semiconductor region of a second conductivity type disposed under the photo-detecting surface and forming a junction with the semiconductor substrate. A dielectric body is provided in the semiconductor substrate beneath the junction so that a width of the dielectric body in a direction parallel to the photo-detecting surface does not extend beyond a width of the semiconductor region in the direction parallel to the photo-detecting surface. The dielectric body is polarized due to charges forming a depletion region generated by the semiconductor substrate and the semiconductor region. A width of the dielectric body is approximately equal to a width of an inner surface of the depletion in the direction parallel to the photo-detecting surface of the semiconductor substrate.